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Research on Blasting Vibration Propagation Law and Vibration Reduction Technology for Tunnel Excavation
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Rong-jun XIANG1, Chuan-peng LIU2, Sheng-lin LI2, Tian-long LING3
Blasting | 2023, 40(4) : 82 - 88
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Blasting | 2023, 40(4): 82-88
• BLASTING IN ORE AND ROCK •
Research on Blasting Vibration Propagation Law and Vibration Reduction Technology for Tunnel Excavation
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Rong-jun XIANG1, Chuan-peng LIU2, Sheng-lin LI2, Tian-long LING3
Affiliations
  • 1.China Railway 16th Bureau Group Road and Bridge Engineering Co., Ltd., Beijing 101500, China
  • 2.School of Mechanics and Civil Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
  • 3.College of Mechanical and Architectural Engineering, TaiShan University, Taian 271000, China
Published: 2023-12-01 doi: 10.3963/j.issn.1001-487X.2023.04.011
Outline
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At present, mining method is widely used in tunnel construction. The influence of blasting vibration on surrounding rock and supporting structure in tunnel and its disaster control are always hot issues. In order to study the propagation law of blasting vibration inside a tunnel, the vibration signals of simultaneous detonation and detonation at three benches were monitored on site based on the engineering background of a tunnel with soft surrounding rock. The nonlinear regression of Sadovski formula and Fourier transform method were used to analyze and study the test data. The results show that for the same section of the tunnel, the vault has the characteristics of large vibration velocity, high vibration frequency and slow attenuation rate. When 100 ms delay blasting is used between the three steps, the blasting energy can be discretely distributed in time and space, and the vibration superposition effect can be significantly weakened. A single hole blasting test was set in the middle of the cut area, and the single hole vibration waveform was obtained by setting the delay between the test hole and the entire blast as 100 ms. Based on the principle of linear superposition, the delay time was optimized by investigating vibration waveforms synthesized by cut blasting. The results show that when the delay time between holes is 4~7 ms, the peak vibration velocity caused by cut blasting decreases sharply, and the effect of interference is obvious. After the delay time exceeds 7 ms, the peak vibration velocity has no significant difference.

tunnel engineering  /  blasting vibration  /  propagation law  /  linear superposition  /  optimal delay time
Rong-jun XIANG, Chuan-peng LIU, Sheng-lin LI, Tian-long LING. Research on Blasting Vibration Propagation Law and Vibration Reduction Technology for Tunnel Excavation[J]. Blasting, 2023 , 40 (4) : 82 -88 . DOI: 10.3963/j.issn.1001-487X.2023.04.011
Funding
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  • The National Natural Science Foundation of China(51374210; 51574247)
  • Shandong Natural Science Foundation(ZR2020QE266)
Appendix
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Year 2023 volume 40 Issue 4
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82
33
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Article Info
doi: 10.3963/j.issn.1001-487X.2023.04.011
  • Receive Date：2022-11-13
  • Online Date：2026-03-19
  • Published：2023-12-01
Article Data
Affiliations
History
  • Received：2022-11-13
Funding
The National Natural Science Foundation of China(51374210; 51574247)
Shandong Natural Science Foundation(ZR2020QE266)
Affiliations
    1.China Railway 16th Bureau Group Road and Bridge Engineering Co., Ltd., Beijing 101500, China
    2.School of Mechanics and Civil Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
    3.College of Mechanical and Architectural Engineering, TaiShan University, Taian 271000, China

Corresponding:

LIU Chuan-peng (1995-), male, mainly engaged in traffic civil engineering, (E-mail) .
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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